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Re: strict aliasing benefit examples

From: Robert Dewar <dewar at adacore dot com>
To: Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>
Cc: Andrew Pinski <pinskia at physics dot uc dot edu>, gcc at gcc dot gnu dot org
Date: Wed, 29 Nov 2006 03:54:44 -0500
Subject: Re: strict aliasing benefit examples
References: <787b0d920611282001m7882a8fdqae64c03d25388f24@mail.gmail.com> <200611290417.kAT4HnAW019181@localhost.localdomain> <456D3D72.5060705@lu.unisi.ch>

Paolo Bonzini wrote:

for(i = 0;i<*t;i++)
  *f += 1.0;
This one is pretty realistic, especially if you consider C++ and inlining:


Don't you think that a convincing argument here has to be based
on actual timings with and without strict aliasing. It would
be interesting to see cases where that simple-to-understand
argument can be made!

References:
- Re: strict aliasing benefit examples
  - From: Albert Cahalan
- Re: strict aliasing benefit examples
  - From: Andrew Pinski
- Re: strict aliasing benefit examples
  - From: Paolo Bonzini

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